James gage bailey



(No Model.) 2 sheets-sheet 1.; J. G. BAILEY.

Hmwvv.v

No. 394,809. PatentedvD'eo. 18, l1888.

(No Model.) -2 sheetssheet 2.

JL G'. BAILEY.

HARROW. No. 894,809. 8 ]?-a;1;e111ie Dec. 18, 1888.

@RWM/wesen wgmfoz -dle for the teeth, which saddle shall be so arlINTTED STATES PATENT EFTCE.

JAMES GAGE BAILEY, OF NEIV GLASGOW', NOVA SCOTIA, CANADA.

HARROW.

SPECIFICATION forming part of Letters Patent No. 394,809, dated December 18, 1888.

Application filed February ll, 1888. Serial No. 263,692. (No model.)

To @ZZ whom it may concern: Be it known that I, JAMES GAGE BAILEY, a i subject ot' the Queen of Great Britain, residl ing at New Glasgow, in the county of Picton j and Province of Nova Scotia, Canada, have invented certain new and useful.Improvement-s in llarrows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to spring-tooth harrows, and especially to the means employed for attaching the teeth to the barrow-frame. The object of my invention is to provide a more cheap, durable, and simple seat or sadranged that the operation of bolting the tooth to the frame and adjusting it upon the seat can be performed with greater facility.

'A further object of my invention is to provide means for indicating and measuring the depth to which the tooth may be adjusted.

lVith these ends in view my invention consists in the peculiar features and combinations of parts more fully described hereinafter, and .pointed out in the claims.

Referring to the accompanying' drawings, Figure l represents a sectional elevation of my complete device, the seat being in rigid adjustment at the intersection of the crossbars forming the harrowframe; Fig. 2, a sectional end view; Fig. 3, a top view ot' the seat without the tooth; Fig. Llc, a bottom view; Figs. 5 and (i, sectional elevations of modifications; Fig. 7, a top view of the seat and tooth, showing division marks or graduations for grading the depth of the tooth to any desired measurement; Fig. S, an additional modification of the bolt for fastening the seat to the frame, and Fig. 9 a detail of the modified bolt.

The reference-lettersa a indicate a pair of cross-bars forming the main vframing of the harrow, and which are provided with longitudinal lianges 7;, extending along their opposite edges and above and below their central portion, thereby having' the general outline of a T-rail. The construction of these cross-bars, however, does not form the novel feature of this invention, as they have been shown and described in my previous patent.

The seat b is rigidly fastened to the crossbars by the bolt c, which passes through the cross-bars and binds them together in the usual manner. The seat is made of cast metal, which is, by preference,` cast around the head of the bolt c and holds the bolt rigidly in place, as will be seen in Fig. l. rlhe seat b is provided with an interior recess or chamber,

d, which is given, preferably, the form of a segment of a circle, although the other forms shown in the modifications could be successfully employed. In the upper wall of this chamber is made an Voblong' slot, e, through which passes the tooth-bolt f. The width of this oblong slot e is less than the diameter of the head 'nly of the tooth-bolt, Aso as to retain it within the slot.

For the purpose of inserting and removing the boltf, a transverse slot or enlargement, g, is formed at one extremity of the oblong slot e, as will be more clearly seen in Figs. 2 and 53. The upper edges of the seatare provided with the usual lips, 71, to prevent lateral play of the tooth, and the bottom of the seat is provided with diagonal embossment fi, which iits between the upper flanges of the crossbars and supplies the place of the seat-blocks which have heretofore been interposed between the seat and bar. This embossinent z' will always keep the seat locked in its proper diagonal position in relation to the cross-bars.

The tooth-bolt is provided with a nut, ln, by which the tooth is secured to the seat, so that by tightening or loosening this nut the tooth can be shifted upon its seat. The frame-bolt c passes down through the cross-bars and block o, which is interposed between the bars, and the seat and bars are drawn rigidly together by means of the nut p upon the lower end of the bolt. each other, and their threaded ends extend in substantially opposite directions.

In the modification illustrated in Fig. 5 the tooth-seat is provided with a concave upper surface for the reception oi' the tooth, and the shape of the internal chamber is considerably changed, and in the modiiication illustrated The heads of the bolts fand c face in Fig. G this bearing-surface is shown straightr IOO VIO

the tooth-bolt operates, yet it is desirable that the upper `wall ot the chamber should Gorre spond with the exterior surface upon which the tooth-shank yr bears, tor the purpose ot taeilitating the adjusting operation ot' the tooth. In order to measure the depth to which eaeh tooth is extended downward, l provide the tooth and seat with grad nations or divisions l, forming a seale, as will, be more elearly shown p By this means the teeth can all be in Fig. '7. readily seti in uniform adjustment or set at various depths, as eireumstanees may `reflui re.

It is not absolutely essential that the tooth itselt should be provided with divisions adapt:- edA to register with those on the seat, as the depth ot the tooth eau be easily determined by the position, ol' the end o'tf the shank.

Instead ot' casting' the seat around the head ot' the fran'iedmlt C, the seat Could be provhled with a bolt-hole and the bolt with a T-head. rlhe bolt eould then be passed down through the oblong' slot and through the hole in the bottom otl the seat and the boltehead turned transversely to the slot, in which position it would not jump out of the seat7 and it eould then be removably secured in place, as will bemore clearly seen in Figs. S and Si. ln Fig. t dotted lines represent the bolt with its head turned transversely to the slot.

The eonstriu-.tiou ot' my device having been seti forth, lits operation will be briefly deseril'ied by stating' that at'ter the seat has been rigidly fastened to the eross-bars o d by the bolt. e and nut p the tooth-boltf is next inserted into the oblong` slot e, and the shank `l', which lis provided with usual bolt-hole, is plaeed over the upwardly-projeeting en d of the holt. The nut n is then applied and the shank ot' the tooth seen rely fastened down upon the seat. \\'hen it is desired to shitt the tooth upon its seat for the purpose ot' 'raising or depressing the point otf the tooth, this operation ean be easily pert'mmed by simply unserewing` the nut, whieh will allow the shank s to slide over the faee ot' the seat 'with t'aeility. then it is desired to remove the tooth-bolt, it @an be done by simply renniving the nut n and tooth from the seat, then tilting` the bolt over to one side, and at the same time lit'ting its head out through the transverse slot y. Thus it will be seen that the head ot' the bolt is loosely eonlined within the interior ehamber and has a 'ree lateral movement to adapt tselt' to the various adjustments ot'the tooth.

At whatever depth the tooth may be adjusted the divisions upon the seat will indicate the am ou n t.

It is obvious that many slight Changes in the eonstruetion and operation ot' my Vinvention might be resorted to without departing` from the spirit and seope of my invention. Hence l wish it umlerstood that l do notlimit myself to the preeise Construction herein shown, lult feel entitled to all sueh elntnges as come within the seope oli' my invention.

lVhat l. elaim as new, and desire to seeure by liettiers Patent, is-

l. A llarrow-tooth seat provided withan interior ehamber havingl a slot exttanliiiginto it?, in combination with a bolt the head ot whieh is loosely eoniined within said chamber,

substantially as set lorth.

2. A l1arrow-tooth seat;- having an interior ehamber or eavity provided with an oblong' slot, in ecnnbinatiou with a tooth and a tastening-bolt passing' through said slot and retained therein, substantially as described.

il. ln ef'nnbination with a harrow-tooth and fz'tsteniug-bolt, a seat provided with a eavity or chamber having a eoiitraeted oblong slot through whieh said bolt passes, wliereby the head ot the bolt is retainedwithin said Cavity or chamber, substantially as deseribed.

fl. A tooth-seat having an internal eavity provided with an oblong slot having' a trans verse enlargement, whereby the tooth-boltis adj ust'abl y and removably seeured to the seat, substantially as desnifribed.

5. The Combination, in a harrow, ol a seat having an interior chamber provided with an oblong slot, a bolt passing through the saine and having its head adjustably confined within said ehamber, a tooth bearing upon said seat and seeured thereto by said bolt', and aI bolt extending t'rom the under side ol said seat through eross-bars to whieh the seat is l'astened, all arranged and adapted to operate as deseribed.

ln a barrow, a tooth-seat provided with bolts having' their heads seeu red in the seat and their shan ks prijijeeting in substantially opposite direetions through the trame and tooth, 'respmftively, as set l'orth.

.ln test imony whereolf l` a'ttx mysignature in presmiee ot' two witnesses.

JAMES HAGE BAILEY.

lV itn esses:

W. MolNTosH, (il. GPM-LAM.

TOO 

